You can try setting the z-index by inspecting and setting onpage css.

ui-jqdialog { z-index: 1000 !important; }

yeah I saw that, but I can not find the corresponding css file….

You can simply add it anywhere after including the CSS files.

<style>
.ui-jqdialog { z-index: 1000 !important; }
</style>

Yeah, but I will then have to do it for all my grid…

but ok I’ll try that

You can test first if this works onpage. After that you can edit:

lib/js/jqgrid/css/ui.jqgrid.css file and append it at the last line.

that’s not working, tried everything but my menu keep staying above the dialog form….

If you can come on google chat, then I can review the issue remotely.